Alloy Steel Boiler Tubes Manufacturer in India
Alloy Steel Boiler Tubes Manufacturer in India
Sachiya Steel International is a leading Alloy Steel Boiler Tubes Manufacturer in India with 20+ years of experience since 2005 in manufacturing and supplying pipes and tubes for demanding industrial applications. We supply alloy steel boiler tubes in grades, sizes, wall thicknesses, and lengths suited to boilers, superheaters, reheaters, power plants, refineries, petrochemical units, and process industries.
Our range includes commonly specified grades such as ASTM A213 T5, T9, T11, T12, T22, T91, ASTM A209 T1, and 16Mo3, with other grades available on request. Production can be arranged for both regular requirements and project orders, with popular sizes available from ready stock, subject to availability.
For quality and traceability, tubes can be supplied with EN 10204 3.1 Material Test Certificates, chemical and mechanical test reports, heat-treatment records, dimensional inspection reports, hydrostatic or NDE reports, and other documentation specified by the customer. With established manufacturing and export experience, we also support custom sizes, inspection requirements, export packing, documentation, and shipment coordination for customers in India and overseas.
What Are Alloy Steel Boiler Tubes?
Alloy Steel Boiler Tubes are seamless or welded steel tubes made with alloying elements such as chromium, molybdenum, nickel, and vanadium to improve strength, heat resistance, oxidation resistance, and service life at elevated temperatures. They are used in boilers and thermal equipment where tubes must withstand high pressure, repeated heating, and demanding operating conditions.
Compared with ordinary carbon steel tubes, alloy steel grades offer better performance under prolonged exposure to high temperature and pressure. Grades such as ASTM A213 T11, T22, T91, T5, and T9, along with 16Mo3, are commonly selected according to the boiler design, operating temperature, pressure, and applicable standard.
As an Alloy Steel Boiler Tubes Manufacturer in India, we supply tubes in different grades, outside diameters, wall thicknesses, and lengths, with material testing and certification provided according to the required specification.
Alloy Steel Boiler Tubes
High-quality alloy steel boiler tubes manufactured for demanding applications across power generation, oil & gas, petrochemical, chemical, engineering and process industries. Available in multiple grades, sizes, wall thicknesses and manufacturing specifications.
Types of Alloy Steel Boiler Tubes
Alloy steel boiler tubes are available in different grades, designs, and manufacturing conditions, depending on their application, operating temperature, and pressure. As an experienced Alloy Steel Boiler Tubes Manufacturer, we offer different tube types to meet the requirements of boilers, superheaters, reheaters, and other high-temperature applications.
- Superheater tubes: T11, T22, T91 and T92, chosen by steam temperature.
- Reheater tubes: the same grades, running at lower pressure but high heat.
- Waterwall tubes: T11, T12, T22 or T23 in the furnace walls, where tubes meet radiant heat.
- Low-alloy tubes (ASTM A209 T1): carbon-molybdenum steel for moderate-heat sections.
- Creep-strength tubes (T91, T92, T23): advanced steels for supercritical and ultra-supercritical units.
- EN-grade tubes (16Mo3, 13CrMo4-5, 10CrMo9-10): for boilers built to European codes.
- Hot-finished tubes: heavier walls, common for superheaters and headers’ stubs.
- Cold-drawn tubes: tighter size and a smoother surface for thinner walls.
A213 T11, T22, T23, T91, T92, A209 T1 and 16Mo3 Alloy Steel Boiler Tubes Manufacturers and Suppliers in India
We manufacture and supply Alloy Steel Boiler Tubes in ASTM A213 T11, T22, T23, T91, T92, ASTM A209 T1, and 16Mo3 grades. Other grades can also be quoted according to project requirements. Popular sizes are available from ready stock, subject to availability, while other sizes can be manufactured to order.
T11 and T22 remain widely used for superheater and reheater applications. T23 is suitable for waterwall and superheater sections where higher strength is required without moving to a 9Cr alloy. T91 and T92 are designed for higher steam temperatures and offer excellent high-temperature strength, allowing thinner tube walls in suitable applications. A209 T1 provides a cost-effective option for moderate-temperature service, while 16Mo3 is commonly selected for boilers manufactured to European specifications.
When selecting an Alloy Steel Boiler Tubes Manufacturer and Supplier in India, material certification is an important part of the purchase. Our documentation can clearly identify the grade, heat-treatment condition, and required pressure or electric test results, providing traceability for the supplied tubes.
Types of Pipes & Tubes
Explore our range of industrial pipes and tubes, manufactured for different applications, materials, specifications and engineering requirements.
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Copper Nickel Alloy Pipe
→Get Certified Alloy Steel Boiler Tubes at Competitive Factory Prices
Alloy Steel Boiler Tubes Specification
The table lists the working specification of our Alloy Steel Boiler Tubes.
| Item | Detail |
|---|---|
| Product | Alloy Steel Boiler Tubes |
| Type | Seamless |
| Main grades | A213 T11, T12, T22, T23, T91, T92; A209 T1; EN 10216-2 16Mo3, 13CrMo4-5, 10CrMo9-10 |
| Product standards | ASTM A213 / ASME SA213, ASTM A209 / SA209, EN 10216-2 |
| General requirements | ASTM A1016 (A213), ASTM A450 (A209) |
| Design reference | ASME Boiler and Pressure Vessel Code Section I, EN 12952 |
| Size basis | OD and wall thickness in mm, wall ordered by minimum or average |
| Size reference | OD 38.1 to 76.2 mm in the weight chart, other sizes on request |
| Length | Fixed, random or cut length |
| Finish | Hot finished or cold drawn, pickled, oiled or varnished |
| Heat treatment | Normalised and tempered, or annealed, as the grade requires |
| Tests | Chemical analysis, tensile, hardness, flattening, flaring, hydrostatic or eddy current test |
| Certificate | EN 10204 3.1 with every order, 3.2 on request |
| Inspection | Third-party inspection on request |
Alloy Steel Boiler Tubes Standards and Specifications
Boiler tubes follow a material standard, a general standard and the boiler design code. The table shows each one's role.
| Standard | What it does | Where it applies |
|---|---|---|
| ASTM A213 / ASME SA213 | Seamless ferritic and austenitic alloy tubes for boilers, superheaters and heat exchangers | T11, T12, T22, T23, T91, T92 |
| ASTM A209 / ASME SA209 | Seamless carbon-molybdenum boiler and superheater tubes | T1 |
| ASTM A1016 | General requirements for alloy and stainless tubes | Tolerances, tests and marking for A213 |
| ASTM A450 | General requirements for carbon and low-alloy tubes | Tolerances and tests for A209 |
| EN 10216-2 | Seamless pressure tubes with elevated-temperature properties | 16Mo3, 13CrMo4-5, 10CrMo9-10 |
| ASME BPVC Section I | Rules for power boilers | Wall and stress design by your engineer |
| EN 12952 | Water-tube boilers and auxiliary installations | European boiler design |
| EN 10204 | Types of inspection documents | 3.1 and 3.2 certificates |
Alloy Steel Boiler Tubes Material and Grades
Choose the grade by steam temperature, pressure and the fireside conditions. The table sets out the main options.
| Grade | Steel type | UNS | EN number (closest) | Boiler duty |
|---|---|---|---|---|
| A213 T11 | 1¼Cr-½Mo-Si | K11597 | 1.7335 (13CrMo4-5) | Superheater and reheater, moderate steam |
| A213 T12 | 1Cr-½Mo | K11562 | 1.7335 (13CrMo4-5) | Waterwall and low-heat superheater |
| A213 T22 | 2¼Cr-1Mo | K21590 | 1.7380 (10CrMo9-10) | Superheater, reheater, higher steam heat |
| A213 T23 | 2¼Cr-1.6W-V-Nb | K41650 | 1.8201 (7CrWVMoNb9-6) | Waterwall and superheater, stronger than T22 |
| A213 T91 | 9Cr-1Mo-V-Nb | K90901 | 1.4903 (X10CrMoVNb9-1) | Supercritical superheater and reheater |
| A213 T92 | 9Cr-1.8W-V-Nb | K92460 | 1.4901 (X10CrWMoVNb9-2) | Ultra-supercritical superheater |
| A209 T1 | C-½Mo | K11522 | 1.5415 (16Mo3) | Moderate-heat sections |
What Is the Difference Between Alloy Steel Boiler Tubes and Carbon Steel Boiler Tubes?
The short answer: carbon steel boiler tubes (ASTM A192 and A210) suit lower-temperature parts such as economisers and low-pressure waterwalls. Alloy steel tubes keep their strength and resist oxidation at the high metal temperatures found in superheaters and reheaters. Carbon steel is generally kept below about 425°C of metal temperature, which is where alloy steel takes over.
| Point | Alloy steel boiler tubes | Carbon steel boiler tubes |
|---|---|---|
| Typical standard | ASTM A213, A209 | ASTM A192, A210 |
| Strength at high heat | Holds strength | Falls off above about 425°C |
| Oxidation (scaling) resistance | Good, rises with chromium | Limited |
| Creep resistance | Good to excellent | Limited |
| Wall thickness for the same duty | Thinner in high-strength grades | Thicker |
| Cost | Higher per tube | Lower per tube |
| Typical position | Superheater, reheater, hot waterwall | Economiser, cooler waterwall |
Alloy Steel Boiler Tubes Chemical Composition
Chemistry decides creep strength, oxidation resistance and weldability. The first table shows the ASTM A213 grades. Values are percentage by weight, maximum unless shown as a range.
| Grade | C | Mn | Si | Cr | Mo | Other elements | P / S max |
|---|---|---|---|---|---|---|---|
| T11 | 0.05–0.15 | 0.30–0.60 | 0.50–1.00 | 1.00–1.50 | 0.44–0.65 | — | 0.025 / 0.025 |
| T22 | 0.05–0.15 | 0.30–0.60 | 0.50 | 1.90–2.60 | 0.87–1.13 | — | 0.025 / 0.025 |
| T23 | 0.04–0.10 | 0.10–0.60 | 0.50 | 1.90–2.60 | 0.05–0.30 | W 1.45–1.75, V 0.20–0.30, Nb 0.02–0.08, B 0.0005–0.006, N 0.030 max, Al 0.030 max | 0.030 / 0.010 |
| T91 | 0.07–0.14 | 0.30–0.60 | 0.20–0.50 | 8.00–9.50 | 0.85–1.05 | V 0.18–0.25, Nb 0.06–0.10, N 0.030–0.070, Ni 0.40 max, Al 0.02 max | 0.020 / 0.010 |
| T92 | 0.07–0.13 | 0.30–0.60 | 0.50 | 8.50–9.50 | 0.30–0.60 | W 1.50–2.00, V 0.15–0.25, Nb 0.04–0.09, N 0.030–0.070, B 0.001–0.006, Ni 0.40 max, Al 0.02 max | 0.020 / 0.010 |
Carbon-Moly and EN Grades
| Grade | C | Mn | Si | Cr | Mo |
|---|---|---|---|---|---|
| A209 T1 | 0.10–0.20 | 0.30–0.80 | 0.10–0.50 | — | 0.44–0.65 |
| 16Mo3 | 0.12–0.20 | 0.40–0.90 | 0.35 max | 0.30 max | 0.25–0.35 |
| 13CrMo4-5 | 0.10–0.17 | 0.40–0.70 | 0.35 max | 0.70–1.15 | 0.40–0.60 |
| 10CrMo9-10 | 0.08–0.14 | 0.30–0.70 | 0.50 max | 2.00–2.50 | 0.90–1.10 |
Alloy Steel Boiler Tubes Mechanical Properties
Mechanical properties show the strength and hardness of the tube at room temperature. The table gives minimum values.
| Grade | Tensile min (MPa) | Yield min (MPa) | Elongation min (%) | Hardness max |
|---|---|---|---|---|
| A213 T11, T12, T22 | 415 | 205 | 30 | 163 HBW / 85 HRB |
| A213 T23 | 510 | 400 | 20 | 220 HBW |
| A213 T91 | 585 | 415 | 20 | 250 HBW |
| A213 T92 | 620 | 440 | 20 | 250 HBW |
| A209 T1 | 380 | 205 | 30 | 80 HRB |
| 16Mo3 (wall up to 16 mm) | 450–600 | 280 | 22 | — |
| 13CrMo4-5 (wall up to 16 mm) | 440–590 | 290 | 22 | — |
| 10CrMo9-10 (wall up to 16 mm) | 480–630 | 280 | 22 | — |
Alloy Steel Boiler Tubes Size and Weight Chart
Boiler tubes are ordered by OD and wall. Weight follows the standard formula for carbon and low-alloy steel:
OD and wall are in mm. Example: a 50.8 mm OD tube with a 4.0 mm wall weighs (50.8 − 4.0) × 4.0 × 0.02466 = 4.62 kg/m. All values below are in kg/m.
| Wall (mm) | 38.1 OD | 44.5 OD | 50.8 OD | 57.15 OD | 63.5 OD | 76.2 OD |
|---|---|---|---|---|---|---|
| 3.2 | 2.75 | 3.26 | 3.76 | 4.26 | 4.76 | 5.76 |
| 4.0 | 3.36 | 3.99 | 4.62 | 5.24 | 5.87 | 7.12 |
| 5.0 | 4.08 | 4.87 | 5.65 | 6.43 | 7.21 | 8.78 |
| 6.3 | 4.94 | 5.93 | 6.91 | 7.90 | 8.89 | 10.86 |
T91 and T92 contain more chromium and tungsten, so real weight may differ slightly from the formula.
Available Sizes, Dimensions and Tolerances
Alloy Steel Boiler Tubes are ordered by OD, wall and length, and the OD range in the chart can be extended on request. Boiler designers usually specify the minimum wall, so the thinnest point meets the pressure calculation. For hot-finished tubes with an OD up to 101.6 mm, the OD may vary by +0.4 mm and −0.8 mm. Wall tolerance on tubes ordered by minimum wall depends on the thickness, as shown below.
| Wall thickness (mm) | Wall tolerance (hot-finished, OD up to 101.6 mm) |
|---|---|
| Up to 2.4 | +40% / −0 |
| Over 2.4 to 3.8 | +35% / −0 |
| Over 3.8 to 4.6 | +33% / −0 |
| Over 4.6 | +28% / −0 |
Cold-drawn tubes carry tighter limits. Tell us your required OD and wall tolerance, and we will quote against it.
Alloy Steel Boiler Tubes Common Materials
The material grade of a boiler tube is selected according to the operating temperature, pressure, steam conditions, and location within the boiler. As experienced Alloy Steel Boiler Tubes Suppliers, we offer commonly specified grades for different boiler and power-generation applications.
ASTM A213 T11: 1¼Cr-½Mo-Si steel (UNS K11597), commonly used for moderate-temperature superheaters and reheaters.
ASTM A213 T22: 2¼Cr-1Mo steel (UNS K21590), selected for higher-temperature superheater and reheater service.
ASTM A213 T23: 2¼Cr-1.6W-V-Nb steel (UNS K41650), used in waterwalls and superheater sections where higher strength is required.
ASTM A213 T91: 9Cr-1Mo-V-Nb steel (UNS K90901), developed for high-temperature service in supercritical boiler units.
ASTM A213 T92: 9Cr-1.8W-V-Nb steel (UNS K92460), used for demanding ultra-supercritical boiler applications.
ASTM A209 T1: Carbon-molybdenum steel (UNS K11522), providing a practical option for moderate-temperature boiler service.
16Mo3, 13CrMo4-5 and 10CrMo9-10: EN pressure-tube grades used for boilers and pressure equipment manufactured according to European specifications.
Alloy Steel Boiler Tubes We Manufacture and Supply
We make Alloy Steel Boiler Tubes for each part of the boiler. The table matches each one to a grade.
| Boiler part | Common grades | What the tube faces |
|---|---|---|
| Waterwall | T11, T12, T22, T23 | Radiant furnace heat |
| Superheater | T11, T22, T91, T92 | High steam temperature and pressure |
| Reheater | T11, T22, T91 | High temperature at lower pressure |
| Heat recovery steam generator (HRSG) | T11, T22, T91 | Hot exhaust gas and thermal cycling |
| Low-heat sections | A209 T1, 16Mo3 | Moderate temperature |
Applications of Alloy Steel Boiler Tubes
- Thermal power plants: Superheater, reheater and waterwall tubes in utility boilers.
- Combined cycle plants: HRSG tubes in gas turbine exhaust units.
- Captive and cogeneration power: Boiler tubes for industrial steam and power.
- Oil refineries: Fired heater coils and waste heat boilers.
- Petrochemical plants: Process heaters and steam generation units.
- Fertiliser plants: Waste heat boilers on ammonia and synthesis lines.
- Chemical plants: Process steam boilers running hot and under pressure.
- Marine: Main and auxiliary boilers on ships and offshore units.
Why Choose Us as Your Alloy Steel Boiler Tubes Manufacturer in India?
Choosing the right Alloy Steel Boiler Tubes Supplier in India means looking beyond grade availability. Consistent quality, manufacturing capability, inspection, documentation, and the ability to handle both regular and project requirements are equally important.
With 20+ years of experience since 2005, We manufacture and supplies alloy steel boiler tubes for power generation, refineries, petrochemical plants, process industries, and engineering applications. We manufacture tubes in grades including A213 T11, T22, T23, T91, T92, A209 T1, and 16Mo3, with other grades available as required.
Our manufacturing capability supports production requirements of up to 100 tons per month, allowing us to handle both recurring requirements and larger project orders. Tubes can be supplied in different outside diameters, wall thicknesses, lengths, finishes, and heat-treatment conditions according to the applicable specification.
For quality assurance and traceability, we provide EN 10204 3.1 MTCs, chemical and mechanical test reports, heat-treatment records, dimensional inspection reports, hydrostatic or NDE reports, and other documents specified by the customer. We also take care of packing, export documentation, and shipment coordination for customers in India and international markets.
Countries We Export Alloy Steel Boiler Tubes To
Our Alloy Steel Boiler Tubes are supplied to customers in major industrial markets across the Middle East, Europe, Asia, Africa, and the Americas. These exports support applications such as power generation, refineries, petrochemical plants, process industries, and other facilities where boiler tubes operate under high temperature and pressure.
Middle East: UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, and Iraq
Europe: Germany, United Kingdom, France, Italy, Spain, Netherlands, Belgium, and Turkey
North America: USA, Canada, and Mexico
South America: Brazil, Argentina, Chile, Colombia, and Peru
Africa: South Africa, Egypt, Nigeria, Kenya, Ghana, and Tanzania
Asia-Pacific: Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, and Australia
For overseas orders, we coordinate material certificates, inspection documents, export packing, shipping paperwork, and dispatch requirements according to the destination and customer specifications. This helps Alloy Steel Boiler Tubes Suppliers maintain consistent documentation and traceability across international shipments.
Alloy Steel Boiler Tubes FAQs
Common questions about alloy steel boiler tube grades, temperatures, testing, dimensions, and supply.
Which grade of Alloy Steel Boiler Tubes should I choose for a superheater?
Pick by steam temperature. T11 and T22 cover most subcritical units, while T91 and T92 suit supercritical and ultra-supercritical steam.
How do I choose between T22 and T91?
Look at metal temperature and design life. T91 has much higher creep strength, so it allows thinner walls at high heat. T22 costs less and works well at moderate temperatures.
When should I pick T23 for a waterwall?
Consider T23 when you want more strength than T22 and easier fabrication than 9Cr steels. Your boiler designer should confirm it against the design code.
Are alloy boiler tubes seamless or welded?
ASTM A213 covers seamless tubes only, and that is the form we supply for alloy boiler duty. Welded boiler tubes exist mainly in carbon steel.
Why do boiler designers specify minimum wall?
Minimum wall guarantees the thinnest point of the tube still meets the pressure calculation. An average-wall order allows a plus-minus variation around the nominal.
Is heat treatment needed after welding?
Usually yes. Chrome-moly steels need preheat and post-weld heat treatment, and T91, T92 and T23 need tighter control than T11 or T22. Follow an approved welding procedure.
What tolerances apply to OD and wall?
ASTM A1016 or A450 sets them, depending on the grade. The table above gives guide figures for hot-finished tubes.
What sizes can I order?
The chart above covers OD 38.1 to 76.2 mm in walls of 3.2 to 6.3 mm. Other sizes can be quoted on request.
How do I calculate the weight of a tube order?
Use Weight (kg/m) = (OD − Wall) × Wall × 0.02466, with OD and wall in mm. Multiply by length and quantity. Actual weight varies slightly with wall tolerance.
What affects the price of Alloy Steel Boiler Tubes?
Grade is the biggest factor, since chromium, molybdenum, tungsten and vanadium move the cost. OD, wall, finish, quantity, testing, inspection and freight also count.
Which certificates come with the tubes?
Each order carries an EN 10204 3.1 certificate showing chemistry and mechanical results. A 3.2 certificate and third-party inspection are available on request.
Is every tube tested before it ships?
ASTM A213 requires a hydrostatic test or a non-destructive electric test on each tube, with flattening and flaring tests on samples. Tell us your preferred test when you enquire.
Are you a manufacturer or a supplier of Alloy Steel Boiler Tubes?
We are both. We manufacture near Mumbai and supply ready stock of popular sizes from the same location, subject to availability.
Do you export Alloy Steel Boiler Tubes, and how are they packed?
Yes. We ship to 85+ countries from our Mumbai export office, and we pack the tubes to suit sea or air freight and your project needs.